Filter



sept. 1o, 1929. R. B. MILLARD FILTER Filed Oct. 2, 1928 2 Sheets-Sheet 1r /wavlltmnnalib INVENTOR. MZI-U,

A TTORNE Y.

Sept. l0, 1929. R, B- MlLLARD 1,727,554

FILTER Filed oct.v 2, 1928 2 sheets-sheet 2 INVENTOR.

' Ji .3.Mz'llarfl,

A TTORNE Y.

Patented Sept. 10, 1929.

UNITED STATES rArsnrorFieE.

RAYMOND B. MILLARD, OF TULSA, OKLAHOMA.

FILTER.

Application filed October y2, 1h28. Serial No. 309,778. t.

lo is the provision of a filter embodying a body or housing providedwith a detachable cover plate, the cover plate forming means forreceiving the yinlet and outlet tubes for the liquid to be filtered orrectified, the removable top also forming an efficient means forpermitting` the quick removal and refilling of the body with the desiredfiltering material.

A further object of the invention is the provision of a body receivingthe filtering material having an open top with a removable covertherefore and means for clampn .ing the cover iii'position on the top ofthe body, the cover being so formed as to per- 5 mit the holding offiltering` paper, cloth, or

the like in contact with the open end of the body whereby the liquidpercolating through the filtering material will be filtered by the paperas the liquid leaves the body, the removable top allowing the quickrenewal of the filtering paper when the same becomes clogged. f A.further obyect of the invention is the provision of novel means forcontrolling the,

flow of the liquid from the filter and thus control the rate offiltration. A further object of the invention is the provision of acentral inlet tube for the liquid carried by the removable cap of thefilter, the inlet tube having novel means associated therewith forengaging the filtering paper so as to prevent seepage of the liquid pastthe paper and tube.

A still'further object of the invention is to provide an improved filterof the above 5 character, which will be durable and efcient in use, onewhich will besimple and easy to manufacture, and one whichv can beplaced upon the market at a very reasonable cost.

With these and other objects in view, the 0 invention Consists in thenovel construction,

arrangement and'formation of parts, as willy` be hereinafter morespecifically described,

claimed, and illustrated in the accompany# f ing drawings, in whichdrawings Figure 1 is a vertical ysection through the.t completefiltering apparatus showing the same in use. y y

Figure 2 is a top plan view of the novel cap or cover for the filteringjar.

Figure 3 is a diametric section'through the cap or cover of thefiltering j ar.

Figure i is a bottom plan view of the cover or cap for the filteringjar, and n y Figure 5 is a side elevation of the filtering jar showing amodified form thereof.

Referring to the drawings in detail, wherein similar referencecharacters designatecou responding parts throughout the several views,the letterA generally indicates the improved filtering apparatus, Lwhichcom-y prises aV ar 10 which can be of any desired size and made of'anyjdesired material such as glass, porcelain, or the like. As shown,the jar 10 includes the side wall 11 and the bottom wall 12. The upperend of the jar is' left open` Vand is provided with a widefen-y tranceneck 13 which may externally screw threaded for the reception of aretaining cover ring 111-. rThe u pper'end ofthe jar is adapt# ed tobenormally closed by a novel cover plate 15, which will be hereinaftermore fully described. As shown, the cover retaining ring 14 is providedwith an inwardly directed annular flange 16 for engaging the cover plate15 for holding the same in intimate Contact with the upper edgeof theneck 13. If preferred a gasket 16 can be interposed between the flange16 and the cover 15.

The jar 10 receives any preferred type of filtering inediumfand, asshown-=l the jaris filled to a point substantially up to the neckk 13with filtering material 17 which can ber inl the nature of fine charcoalor sand. A bed 18 of wire mesh gauzey or perforated metal disc can beplaced upon the upper surfacey of the filtering material 17 afterwhichother filter-` ing material 19 such as lump charcoal can be placedthereon,y Itis to be noted that l have shown a segration of filteringmaterial. This is essential for the progressive-or, series treat- Vic vwork their way through the larger particles.

ment of liquid. In other words, one might wish to first strain sedimentthrough sand and then yprogressively deodorize, deflavorize,

then progressively revivify color and flavor. f

This type of filter is amenable to such treatment due to the fact thatthere is little, if any tendency, for the material to allocate rinstratas other than those in which they were first placed. Y Y' Y This isnot true in a iilfter utilizing a downward iow of liquid, where thefiner particles until they finally lodge at or near the bottom of thefilter. This prevents even approximate lamination of dierent filteringmateriais andabsolutely obviates progressive or4 series vfiltration inone container.

I also utilize' a sheet of'jliltering' paper or liltering cloth QOwhichfiltering'paper is disposed'dilre'ctly between' the cover l5 land theupper end of the neckl3. Thus the filtering paper also acts in thenatureof a gasket for the cover; It is tot be also noted that 'by havingthewide mouth j ar'with the removable cover that the lilteri'ng;papercan be quickly r-emovediandi replaced when so desired. Ituri therthe entireA jarcan' be cleaned and new material placed in the samewithlittle or no trouble.

Referring' more particularly to the cover l5, thesame can be made of anydesiredmaterial, such'as hard rubber, glass', porcelain or the likefan'dis provided with' al centrall boss 2l, lwhich lboss alsodeiines a`central-dependking collar or abutment 22`jthe purpose of which willi'belater described. This boss 2l receives `the cent'r'al'liquidinlet vtube23a which tube extendsfinto the jar and termi-- nates-slightly lshort'ofthe lower end of the filtering material and thus it can be seen thattheliquid introduced into the jar percolates upward through all ofthedifferent layers of filteringmaterial.' At one side ot the central boss21, the cover lis provided with'a second' boss` 23 for the reception'of'fan outlet tube 24,'

which permits the fiow of the liquid from the jar after the` filteringthereof. The liquid from the outlet tube 24: can be receivedinl any.

' preferred typeA of container, glass Vor the like and as shown Ihaveprovided a jar, 25 for thisv purpose. The tube 2li-.can receive a`downwardly bent tube-26 so that the liquid' filter` 23 VconnectedV withn Siphon 30, the short leg of which is inserted in a suitable liquidcontainer 3l.

Again referring to the cover 15 it is to be noted that the same isprovided with a relatively wide flat lperipheral flange 32 which engagesthe top of the jar and that this flange is oiset laterally from the bodyof the cover so as to lie in a plane below the same for effectivelyengaging the filtering paper 20.

der to permit the flow of liquid from one pocket to the other, therpockets being defined by the ribs 33, the flange 32,v and theV centralboss 2l.

'lhelilteringaction is accomplished by the slow ascent ofthe liquidthrough the1porous liltering bed of sand, charcoahor otherlilteringmedium. By proper selection of*v filtering materials, substances may beetl'ectivelyfandV rapidly clarified, purified, Ydeodorizedanddecolorized.V Objectional flavors may also be removed by thiseiiicientilter Iwith it-s obvious intimate contact between material tobe liltered and the filtering medium thereby assuring a filtrate ofuniform quality and of positive liow regardless of the nature of theliquid or of the sediments contained therein;

Itcan be seen that the liquid to be filteredy passes upward throughthefilter-p aper 20, .not downward' Vas in the usual practice. In adownshot filter the entire weight of the filter materialand liquid'pressesnpon'the i'ilter paper. This weight tends to packfthe lilteringmaterial'. It clogs the pores of the filter paper and whentaken'togetherwith the ever increasing amount of filtered sediment, filter poresbecome obstructed to the point wherer all iltrationis arrested.

In this-filter, having the filter paper above,- obviates thesedisadvantages. By admitting the liquid at the bottoni the upwardvelocity of the liquid tendstoprevent the filtering medium, (charcoal orequivalent) from settling into an impervious mass. No weight other thanthe velocity head of the liquid bears upon the filter' paper.Consequently, this paper remains practically free of sediment. In otherwords, the force ot gravity about balances the velocity head therebypreventing ne particles from impinging'and adhering to the filtersurface; In this filter, the particles are practically in suspension andonly the more flocculent particles need be handled by the lilter paper.Thus the filter is of great capacity and' a large amount of liquid canbe filtered through a given area using this apparatus.

In Figure 5 of the drawings I have shown a slightly modiied form ofilter jar l() in which, the bottom wall 12 can be providedl with apet-cock 35 and the side wall adjacent to the lower end thereof with asimilar petcock 36. If preferred, either one of these pet cocks can beutilized as the inlet for the liquid to be filtered and these pet cockscan also be used as drain cooks.

Changes in details may be made without departing from the spirit or thescope of this invention, but

I/Vhat I claim as new is:

l. In a filtering device, a j ar having a large entrance neck at itsupper end, filtering material in said jar, filtering paper tted over theupper end of said neck, a removable cover for said neck including a flatperipheral flange for engaging the edge of the iiltering paper and forholding the same on said neck, means engaging the cover for holding thesame in intimate contact on said neck, spacing ribs carried by the coverfor engaging the filtering paper, and inlet and outlet tubes carried bysaid cover, the inlet tube extending through the filtering paper andfiltering material and terminating short of the lower end of said jar.

2. A filter comprising a jar having an open upper end, a removable coverJfor said open end, inlet and outlet tubes carried by said cover, saidinlet tube extending into the jar and terminating slightly short of thebottom thereof, a layer of fine filtering material in said jarsubstantially rigid, iltering screens resting upon and supported by saidmaterial, a layer of coarse iiltering material resting upon andsupported by said screens for effectually keeping the filtering mediumsseparated, and liltering paper interposed between the cover and theupper edge of said jar.

3. In a iltering device, a filtering jar having an open end, a removablecover for said open end, filtering material in said jar, means forclamping the cover on said jar, said jar having an inlet boss, an inlettube extending through said boss and through the iiltering material andterminating short of the lower end of said jar, a sheet of filteringmaterial interposed between the cover and the upper edge of said ar andacting to form a gasket between the jar and cover, and a sealing ringcarried by said inlet tube engaging the lower face of said filteringpaper for holding the same against said boss.

In testimony whereof I aiix my signature.

RAYMOND B. MILLARD.

